Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

This research aimed at testing the viability of using Sorghum Stalk Ash (SSA) as a partial replacement lime in stabilization red clay soils for road subgrade construction. Red have been identified highly expansive soils, which are affected by both climatic conditions and loading patterns. The consideration traffic patterns effects on these has taken into account. A penetration test 2.5 mm used pure stabilized 10% 15% with SSA showed an improvement CBR up to 11.6%. Again, PI reduced 11.2%. results obtained within recommended values effective required laying permanent flexible pavements. As result, recommendation making use lower quantities its costs tested through this research. However, further more percentage improve below while keeping levels construction regulations is welcomed.